398103838 has 8 divisors (see below), whose sum is σ = 651442680. Its totient is φ = 180956280.

The previous prime is 398103833. The next prime is 398103863. The reversal of 398103838 is 838301893.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 398103794 and 398103803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398103833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9047793 + ... + 9047836.

It is an arithmetic number, because the mean of its divisors is an integer number (81430335).

Almost surely, 2^398103838 is an apocalyptic number.

398103838 is a deficient number, since it is larger than the sum of its proper divisors (253338842).

398103838 is a wasteful number, since it uses less digits than its factorization.

398103838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18095642.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 398103838 is about 19952.5396378506. The cubic root of 398103838 is about 735.6402017678.

The spelling of 398103838 in words is "three hundred ninety-eight million, one hundred three thousand, eight hundred thirty-eight".